ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

JW Asset Management, LLC's Holding History (CIK: 0001549738)

Note: Option positions (PUT/CALL) are excluded.

Q1 2016
Shares 25,424 Value ($000) $3,540 Avg Close — Range —
Q4 2015
Shares 33,424 Value ($000) $6,376 Avg Close — Range —
Q3 2015
Shares 33,424 Value ($000) $5,227 Avg Close — Range —
Q2 2015
Shares 33,110 Value ($000) $5,985 Avg Close — Range —
Q1 2015
Shares 32,229 Value ($000) $5,585 Avg Close — Range —
Q4 2014
Shares 24,208 Value ($000) $4,479 Avg Close — Range —